On Wed, Aug 22, 2012 at 7:31 PM, Myra Nelson <myra.nelson@xxxxxxxxxx> wrote: > After my research on sysvinit, the simple version, I'm working my way > through systemd. Two things I noticed about the cups configuration: > > 1: The cups.conf file in /etc/dbus-1/systemd reads Notice that this should have been "system.d" and not "systemd". These are the dbus configuration files (for the system bus), and not the systemd ones. > <!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN" > "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd";> > <busconfig> > <!-- Only root can send this message --> > <policy user="root"> > <allow send_interface="com.redhat.PrinterSpooler"/> > </policy> > > <!-- Allow any connection to receive the message --> > <policy context="default"> > <allow receive_interface="com.redhat.PrinterSpooler"/> > </policy> > </busconfig> > > Do the allow send and allow receive interfaces need to be changed, or > is this taken into account by the rest of systemd? Sorry that I can't help you with more details, don't know cups/dbus that well. > 2. The /usr/lib/systemd/system/cups.socket reads > [Unit] > Description=CUPS Printing Service Sockets > > [Socket] > ListenStream=/var/run/cups/cups.sock > ListenStream=631 > ListenDatagram=0.0.0.0:631 > BindIPv6Only=ipv6-only > > [Install] > WantedBy=sockets.target Again, I don't know much about CUPS, so can't answer your question. However, just in case it was not clear, the above socket file gives you: # ss -l -u -t | grep ipp udp UNCONN 0 0 *:ipp *:* tcp LISTEN 0 128 :::ipp :::* Where the tcp socket only accepts ipv6 connections. Please see systemd.socket(5) and ipv6(7) for more details. > With the > newer version of cups depending on avahi and the differences in the > avahi hosts file and the hosts file, avahi uses gandalf.local while > hosts still uses .localdomain. Not sure I got this last bit. Avahi defaults to using the "local" domain, but this can be configured if you prefer something else (at least I seem to remember doing that at some point). HTH, Tom
